Gear-lock for automobiles



C. G: TROSIEN. GEAR LOCK FOR AUTOMOBILES. APPLlcATloN FILED 1AN.26, |920.

Patented sept. 14,1920.

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Unire CHARM-:s sY TRosIEN, or PONTIAC, MICHIGAN.

GEAR-LG CK FOR AUTOMOBILES.

Specification of Letters Patent. l Ifltvnted Sept. 14, 1920.l

Apploation led January 26, 1920. Serial No. 354,108.

. .To all Iwhom t may concern:

Be it known that I, CHARLES G. T nosiEN, citizen of the United States, residing at Pontiac, county ot Oakland, State of Michigan, have invented certain new and useful Im provement in gear- Locks for Automobiles, and'declare the following to be a full7 clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, refer ence being had to the accompanying drawin s, which form a part of this speciiication.

ty invention relates to gear locks for automobiles and an object of my improvements is to provide a strong and cheap construe-- tion which may be readily assembled and will not be liable-.to be vbroken or deteriorated in any way.

I secure this object in the device illustrated in the accompanying drawing, in

wliich- Figure l is a plan View partly in section of the cover of a change-speed gear casing, together with apparatus embodying my invention.

Fig. 2 is a side view of the same, partly broken away.

Fig. 3 is a section on the line llllll of Fig. l, with the parts in one position.

Fig. 4 is a view similar to Fig. 2l with the diderent position to that shown Fig. 5 is a detail section in the plane indicated by the line V-V, Fig. 2.

Fig. (3 is a detail view showing the parts disassembled. v

a is a casting forming the cover of a change-speed gearing; D, b parallel, re-

ciprocating rods by which the constituent gears are shifted to alter the speed ratio;

c indicates a transverse cylindrical aperture extending, in the casting a, between the bearing cavities for the rods, I),

CZ, d are balls of :approximately the saine diameter as the cylindrical aperture c located at the ends oi said aperture and adapted to reciprocate in the same. j', f are sleeves fitting and adapted to reciprocate in the aperture c, each of' said sleeves being bored longitudinally and chamfered as shown at f2, f2

at its outer end to conform to the shape' of a ball (Z to tit against said ball. e is a rod fitting through the boxes of the sleeves f, 7 and adapted to reciprocate therein. b2, b2 are cavities iiorniedin adjacent sides of the rods I), ot a shape to receive balls d, d which lit accurately in said cavities. rod e is of such a length that when one of the lrods b is in such a position that a cavity Z- in one of said rods is opposite a ball b and the cavity in the other rod is removed from its position opposite its corresponding ball, the ends of the rod e shall engage against the balls d, cl so that one of said balls is held in its corresponding cavity and that one of the rods, b, b is locked while the other is free to reciprocate.

g is a rotatable rod bearing in a cavity in thecasting a at right angles to and at j the center ol the cavity c. g2 is a cam on the lower end of the rod g. g3 indicates a pin lock apparatus at the Lipper end ot the rod g. The sleeves f, are of such length that when the rod g is turned to the position shown in Fig. 3, said sleeves shall be free to move to a position at which they shall not engage the balls (l, (Z but when therod g] is turned at right angles to said position, that is to say to the position shown in Fig. 4, the

sleeves f, arc forced outward so that they engage against the balls' (I, d which rest in the chamtered-out portion f2, f2 of said sleeves. The rod can,however, only be turned to the latter position when the cavities b2, b2 are opposite each other and the balls d, d therefore engage in both. of said cavities. In this position both ot' the rods 7, are locked and the change-speed gear is in neutral position and the transmission mechanism ot'ithe automobile can not be thrown into operation.

What I claim is:

l. ln an apparatus of the kind described,

Thel

two shitting rods having cavities in their adjacent sides, a cavity extending between said rods, balls in the ends of said cavity, a transverse rod extending between said balls, sleeves surrounding said rod, and a locking cam to cause said sleeves to engage against said balls or to release the same.

2. In an appargtus .of the kind described,

' adjacent sides; a cavity extendihg between said rods, balls in the ends of said cavity, a,

Atransverse rod extending between Said balls,

l sleeves surrounding said rod, andv :1` locking said balls or to release the same, said sleeves being chzunfered at their outer ends to correspond to the surface of said balls, substanl0 tially as and for theI purpose described. In testimony whereof, I vsign this specification.' 1

CHARLES G. TROSIEN. 

